AP News:巴西狂欢节拉开序幕 民主党初选赛即将打响

Hillary Clinton, Bernie Sanders and Martin O'Malley held their final presidential debate, leading up to the Iowa caucuses. Topics they addressed included gun control, regulations for Wall Street and how to fight the Islamic State militants.

Three of the four Americans released by Iran have arrived in Germany. They’ll return to the US after medical evaluations. The fourth American chose to remain in Iran.

The US Marine Corps has released the names of a dozen marines missing since their two helicopters crashed off Hawaii’s coast. Big waves are complicating the search.

And Brazil’s incredibly popular carnival festival begins in about two weeks. Samba schools are rehearsing for the main parade in Rio de Janeiro.

Matt Small, the Associated Press, with AP News Minute.